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Analog Devices Inc. ADM6315-31D2ARTRL7
- Part No.:
- ADM6315-31D2ARTRL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
ADM6315-31D2ARTRL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,466
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Product details
Overview
ADM6315-31D2ARTRL7 from Analog Devices is a precision open-drain microprocessor supervisory circuit that monitors 3.08 V supply rails with ±2.5% threshold accuracy over −40°C to +85°C, asserts reset for ≥20 ms after power-up or brownout, and supports manual reset via debounced MR input - used in automotive safety systems and industrial controllers requiring reliable power-on reset.
For engineers reviewing the ADM6315-31D2ARTRL7 datasheet, ADM6315-31D2ARTRL7 pinout, ADM6315-31D2ARTRL7 application, or ADM6315-31D2ARTRL7 equivalent, key selection criteria include reset timeout (20 ms min), trip point (3.08 V), operating temperature range (−40°C to +125°C), SOT-143 package compatibility, and open-drain RESET output drive capability.
Technical Context
The ADM6315-31D2ARTRL7 implements a precision bandgap-based voltage reference comparator with built-in hysteresis and temperature-compensated threshold (60 ppm/°C), enabling accurate detection of ≤1.8% supply degradation. Its internal timing circuit generates a guaranteed minimum 20 ms reset pulse upon VCC rise above 3.08 V or MR assertion.
It features an open-drain RESET output capable of sinking 3.2 mA at VCC > 4.25 V and 80 μA down to VCC = 1 V, plus a debounced manual reset input (1 μs minimum pulse width, 100 ns glitch rejection) referenced to VCC-dependent logic thresholds (0.3×VCC / 0.7×VCC).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08 V ±2.5% over −40°C to +85°C - ensures system reset before critical ICs exit valid operating range. |
| Reset Timeout | 20 ms minimum - provides sufficient time for power supply stabilization and microprocessor initialization. |
| Supply Current | 5 μA typical at 5.5 V, −40°C to +85°C - enables ultra-low-power operation in battery-backed systems. |
| Operating Voltage | 1 V to 5.5 V - supports reset assertion even during deep brownout conditions. |
| Reset Delay | 35 μs typical at 1 mV/μs VCC fall rate - enables fast response to transient supply dips. |
| Manual Reset Input | Debounced with 1 μs minimum pulse width and 100 ns glitch rejection - prevents spurious resets in noisy environments. |
| Output Type | Open-drain RESET - allows wired-OR configuration and level-shifting with pull-up to higher voltage rail. |
Pinout & Package
ADM6315-31D2ARTRL7 is housed in a 4-lead SOT-143 package (RA-4), measuring 2.9 mm × 1.6 mm × 1.15 mm, with gull-wing leads optimized for automated assembly and thermal performance (θJA = 330°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Common return path for all internal circuits; must be low-impedance connection to system ground plane. |
| 2 (RESET) | Active-low open-drain output | Sinks current when asserted; requires external pull-up to define logic high level and interface voltage. |
| 3 (MR) | Active-low manual reset input | Debounced input accepting ≥1 μs pulses; floats high internally when unused. |
| 4 (VCC) | Monitored supply input | Primary power source and voltage reference input; supplies internal circuitry and defines reset threshold scaling. |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage monitoring | 3.08 V trip point with ±2.5% tolerance over −40°C to +85°C - eliminates need for external trimming in cost-sensitive designs. |
| Ultra-low quiescent current | 5 μA typical - extends battery life in portable and always-on safety-critical systems. |
| Brownout response speed | 35 μs typical reset assertion delay during VCC fall - prevents erratic microprocessor behavior during supply transients. |
| Robust manual reset interface | 100 ns glitch rejection and 1 μs minimum pulse width - ensures reliable user-initiated reset without false triggers. |
| Wide supply operating range | Functions down to VCC = 1 V - maintains supervision capability through deep undervoltage events. |
Applications
| Automotive Safety Systems | Industrial Motor Controllers |
|---|---|
Use Scenario: Supervising 3.3 V power rail in airbag control units where failure to reset during voltage sag could disable crash detection. IC Role / Device Role / Timing Role: Voltage monitor and power-on reset generator ensuring deterministic MCU startup and brownout recovery. Use Value: Guarantees ≥20 ms reset pulse to hold microcontroller in reset until power stabilizes, preventing unsafe actuation. | Use Scenario: Monitoring 3.3 V logic supply in servo drive firmware modules exposed to EMI-rich factory environments. IC Role / Device Role / Timing Role: Precision supervisor with debounced MR input enabling field-service reset without power cycle. Use Value: 100 ns glitch immunity prevents spurious resets from motor switching noise, improving system uptime. |
| Portable Medical Instruments | Railway Signaling Modules |
Use Scenario: Ensuring reliable boot sequence in handheld glucose meters powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Low-current (5 μA) supervisor detecting 3.08 V threshold to initiate controlled shutdown before battery depletion. Use Value: Operates down to VCC = 1 V, enabling full battery utilization while maintaining supervision integrity. | Use Scenario: Power sequencing in EN 5012x-compliant signaling logic where reset timing must meet SIL-2 functional safety requirements. IC Role / Device Role / Timing Role: Certified supervisory circuit asserting reset for exactly ≥20 ms to satisfy IEC 61508 timing constraints. Use Value: Guaranteed minimum timeout and ±2.5% threshold accuracy support formal safety case documentation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US31D2+T | Same 3.08 V trip point and 20 ms timeout; 12 μA max supply current vs. 12 μA typical for ADM6315-31D2ARTRL7; SOT-23-4 package. | Smaller footprint but higher thermal resistance (θJA = 270°C/W vs. 330°C/W); no MR input debounce specification provided. | Select for space-constrained PCBs where MR noise immunity is managed externally. |
| TPS3808G31DBVR | 3.08 V threshold with ±0.5% initial accuracy (tighter than ADM6315's ±2.5%); 20 ms timeout; 1.6 μA typical supply current. | Push-pull RESET output (not open-drain); requires different pull-up strategy; no manual reset input. | Select when ultra-low current and higher threshold accuracy are prioritized over MR flexibility and wired-OR capability. |
Compared with MAX6315US31D2+T and TPS3808G31DBVR, ADM6315-31D2ARTRL7 uniquely combines open-drain RESET, integrated MR debounce, and guaranteed 20 ms minimum timeout in SOT-143 - making it optimal for safety-critical systems needing field-reset capability and multi-rail interfacing.
Availability
ADM6315-31D2ARTRL7 is available at Aetrix Electronics and suitable for automotive safety systems, industrial motor controllers, portable medical instruments, and railway signaling modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM6315-31D2ARTRL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The ADM6315 family was designed specifically for robust microprocessor supervision in harsh environments - delivering precision voltage monitoring, reliable reset timing, and noise-immune manual reset in compact surface-mount packages.
FAQ
What is the exact reset threshold voltage for ADM6315-31D2ARTRL7?
The ADM6315-31D2ARTRL7 has a nominal reset threshold of 3.08 V, with tolerance of ±2.5% over the −40°C to +85°C temperature range and ±3.5% over −40°C to +125°C. This value is laser-trimmed at wafer test and verified per Analog Devices' production specifications in Rev. I datasheet Table 1.
Does ADM6315-31D2ARTRL7 support manual reset, and how is it implemented?
Yes, ADM6315-31D2ARTRL7 includes a dedicated MR (manual reset) pin (Pin 3) that accepts active-low signals. It features internal debouncing with guaranteed acceptance of ≥1 μs pulses and rejection of <100 ns glitches. When MR is pulled low, RESET asserts immediately and remains low for the full timeout period (20 ms minimum), independent of VCC state.
What is the minimum VCC required for ADM6315-31D2ARTRL7 to assert reset?
ADM6315-31D2ARTRL7 can assert RESET down to VCC = 1 V, as specified in the Absolute Maximum Ratings and confirmed in the RESET Output section of the datasheet. At VCC > 1 V, it guarantees 80 μA sink capability on the open-drain RESET output, enabling supervision during deep brownout conditions.
Is ADM6315-31D2ARTRL7 pin-compatible with other members of the ADM6315 family?
Yes, all ADM6315 variants - including ADM6315-31D2ARTRL7 - share identical 4-lead SOT-143 (RA-4) pinout and electrical interface. Pin 1 is GND, Pin 2 is RESET, Pin 3 is MR, and Pin 4 is VCC. This allows drop-in replacement across trip point and timeout options without PCB modification.
What is the maximum operating temperature range for ADM6315-31D2ARTRL7?
ADM6315-31D2ARTRL7 is rated for operation from −40°C to +125°C, as stated in the Ordering Guide and Absolute Maximum Ratings tables. This extended temperature grade makes it suitable for under-hood automotive, industrial control, and railway applications where ambient temperatures exceed standard commercial ranges.
ADM6315-31D2ARTRL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.08V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
ADM6315-31D2ARTRL7 FAQ
1.How can I place an order for ADM6315-31D2ARTRL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6315-31D2ARTRL7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADM6315-31D2ARTRL7 reliable?
The price and inventory of ADM6315-31D2ARTRL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6315-31D2ARTRL7 is usually 5 days.
3.What payment methods are accepted for ADM6315-31D2ARTRL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6315-31D2ARTRL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6315-31D2ARTRL7?
ADM6315-31D2ARTRL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6315-31D2ARTRL7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADM6315-31D2ARTRL7?
For technical support, including ADM6315-31D2ARTRL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6315-31D2ARTRL7 requirements.
6.How does Aetrix verify that ADM6315-31D2ARTRL7 is sourced from the original manufacturer or authorized distributors?
All ADM6315-31D2ARTRL7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADM6315-31D2ARTRL7 meets industry standards.
7.What is the process for return or replacement of ADM6315-31D2ARTRL7?
All ADM6315-31D2ARTRL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6315-31D2ARTRL7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADM6315-31D2ARTRL7 part is unused and in its original packaging.
Return procedure for ADM6315-31D2ARTRL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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